CN112386969A - Water filtering equipment and working method thereof - Google Patents
Water filtering equipment and working method thereof Download PDFInfo
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- CN112386969A CN112386969A CN202011469877.7A CN202011469877A CN112386969A CN 112386969 A CN112386969 A CN 112386969A CN 202011469877 A CN202011469877 A CN 202011469877A CN 112386969 A CN112386969 A CN 112386969A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/007—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection
- B01D24/008—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection arranged concentrically or coaxially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/38—Feed or discharge devices
- B01D24/40—Feed or discharge devices for feeding
- B01D24/402—Feed or discharge devices for feeding containing fixed liquid displacement elements or cores
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Abstract
The invention provides water filtering equipment and a working method thereof, and is characterized in that: including upper portion have the sewage water inlet the cylindricality jar, establish the inclosed air water recoil room of bottom in the cylindricality jar and establish the filter layer that just is located air water recoil room top in the cylindricality jar, be equipped with gas, water recoil mechanism in the air water recoil room, gas, water recoil mechanism have on the pipe wall gas wash mouth and wash mouth lower center tube, periphery be provided with respectively with back flush intake pipe and the back flush inlet tube of lower center tube intercommunication, back flush intake pipe is equipped with a plurality of gas ports along its length direction, back flush inlet tube is provided with a plurality of outlets along its length direction, just be located air water recoil room top in the cylindricality jar and be equipped with bottom surface confined upper center tube, the upper end of going up the center tube is equipped with sewage overflow mouth, goes up the center tube downside and is provided with the blowdown pipeline. The invention has the advantages of simple structure, reasonable design, convenient use, good filtering and back washing effects, flexible movement and suitability for different scenes.
Description
The technical field is as follows:
the invention relates to water filtering equipment and a working method thereof.
Background art:
the conventional filter tank mainly adopts quartz sand as a filter material, and during filtering, filtered water flows through a water inlet valve and a square hole from a water inlet main channel, overflows a weir crest, enters a V-shaped groove through a side hole, enters the filter tank through water distribution holes at the bottoms of the V-shaped groove and the V-shaped groove respectively, passes through a filter material layer from top to bottom, and then is collected by a water distribution system to enter a clean water tank; when the water quality of the effluent water does not meet the requirement or the head loss of the filter layer reaches the maximum value, the filter chamber needs to be backwashed, in order to enable the filter layer to be in a suspension state, the backwashing gas and the water pass through the filter layer from bottom to top through a water distribution system, when the airflow and the water flow reach certain strength, sand grains are driven to move, so that the sand grains are mutually rubbed and collided, sludge attached to the surfaces of the sand grains falls off during mutual friction among the sand grains, and the sludge flows upwards along with the wastewater and enters a drain outlet on a pipeline in the middle of the filter chamber to be discharged; traditional water filtration equipment generally adopts the mode of pouring to make, and inside structure is complicated, and the construction is loaded down with trivial details, preparation cycle length, and the flexibility is poor, and is inconvenient to use.
The invention content is as follows:
the invention is improved aiming at the problems, namely the technical problem to be solved by the invention is to provide the water filtering equipment and the working method thereof.
The invention relates to water filtering equipment, which is characterized in that: including upper portion have the sewage water inlet the cylindricality jar, establish the air water recoil room of bottom in the cylindricality jar and establish the filter layer that just is located air water recoil room top in the cylindricality jar, be equipped with gas, water recoil mechanism in the air water recoil room, gas, water recoil mechanism have the lower center tube of gas wash mouth and wash mouth on the pipe wall, the periphery be provided with respectively with backwash intake pipe and the backwash inlet tube of center tube intercommunication down, the backwash intake pipe is equipped with a plurality of gas ports along its length direction, the backwash inlet tube is provided with a plurality of outlets along its length direction, just be located air water recoil room top in the cylindricality jar and be equipped with bottom surface confined last center tube, go up and be equipped with sewage overflow inlet on the center tube, go up the center tube downside and be provided with the sewage pipes.
Furthermore, above-mentioned cylindricality jar is cylindrical stainless steel jar body, and the side that just is located sewage water inlet at the internal face of cylindricality jar is equipped with the cofferdam board of round, the cofferdam board forms annular groove with the cylindricality jar internal wall, has the sawtooth at the top edge of cofferdam board.
Furthermore, a plurality of support rods are arranged between the inner wall surface of the cylindrical tank and the upper central pipe.
Furthermore, the filter layer is positioned between the inner wall surface of the cylindrical tank and the upper central tube and comprises a fine quartz sand filter material layer and a coarse quartz sand filter material layer.
Furthermore, the plate surface of the gas-water backflushing chamber, which is contacted with the filter layer, is provided with a filter hole or a long-handle filter cap.
Further, the upper port of the upper central tube is higher than the upper surface of the filter layer.
Furthermore, the backwash air inlet pipe comprises an air inlet annular pipe and a plurality of backwash air inlet branch pipes for communicating the lower central pipe with the air inlet annular pipe, and the backwash water inlet pipe comprises a water inlet annular pipe and a plurality of backwash water inlet branch pipes for communicating the water inlet annular pipe with the lower central pipe.
Furthermore, a washing pipe extending out of the air-water backflushing chamber is arranged on the side part of the lower central pipe, and the end part of the washing pipe is communicated with a washing opening; the side part of the lower central tube is provided with an air washing tube extending out of the air-water backflushing chamber, the air washing tube is communicated with an air washing port, and the air washing port is positioned above a water washing port of the water inlet tube.
The invention relates to a working method of water filtering equipment, which is characterized in that: the water filtering equipment comprises a cylindrical tank, an air-water backflushing chamber and a filtering layer, wherein the upper part of the cylindrical tank is provided with a sewage inlet, the air-water backflushing chamber is arranged at the closed bottom in the cylindrical tank, the filtering layer is arranged in the cylindrical tank and is positioned above the air-water backflushing chamber, a gas-water backflushing mechanism is arranged in the air-water backflushing chamber, the gas-water backflushing mechanism comprises a lower central pipe, a backflushing air inlet pipe and a backflushing water inlet pipe, the lower central pipe is provided with a gas washing opening and a water washing opening, the periphery of the lower central pipe is provided with a backflushing air inlet pipe and a backflushing water inlet pipe which are respectively communicated with the lower central pipe, the backflushing air inlet pipe is provided with a plurality of gas ports; when the filtering operation is carried out, sewage enters the cylindrical tank from the sewage inlet, water to be filtered sequentially passes through the filtering layer and is filtered layer by layer and then enters the air-water backflushing chamber, the backflushing water inlet pipe and the lower central pipe, and finally the filtered water is discharged from the washing pipe on the lower central pipe.
When the filtering structure works for a period of time and the dirt in the filtering layer reaches a certain amount, the filtering resistance of the filtering layer is increased to reduce the filtering amount, and at the moment, the filtering layer needs to be subjected to back flushing work to back flush and discharge the dirt in the filtering layer and recover the filtering capacity of the filtering layer; when the backwashing works, firstly, high-pressure air is only used for dispersing dirt, then high-pressure water washing and high-pressure air washing are carried out together, and finally, high-pressure water washing is only used; when only high-pressure gas is used for dispersing the dirt, gas is blown to the inside through the gas washing pipe by using inflation equipment, the gas passes through the backwashing gas inlet pipe, the gas port, the gas-water backwashing chamber and the long-handle filter cap from the inside of the lower central pipe in sequence, and the gas penetrates through the filter layer and disperses the impurities filtered and deposited on the filter layer; when the high-pressure water is washed, the high-pressure washing water is introduced into the washing pipe, water flow enters the filter layer from the interior of the lower central pipe through the backwashing water inlet pipe, the water outlet, the air-water backwashing chamber and the long-handle filter cap in sequence, the water flow passes through the filter layer to wash impurities filtered and deposited on the filter layer, and the high-pressure water washing can wash the impurities left after water filtration to a sewage overflow inlet at the upper end of the upper central pipe and finally discharge the impurities through a sewage discharge pipeline; when the high-pressure water flushing and the high-pressure air flushing are carried out together, namely, the two modes are carried out simultaneously, namely, the high-pressure water for flushing is introduced into the water washing pipe and the high-pressure air is introduced into the air washing pipe.
Compared with the prior art, the invention has the following beneficial effects: the device has the advantages of simple structure, reasonable design, convenient use, good sewage filterability and backwashing effect, convenient production and manufacture, flexible movement, convenient replacement and maintenance and suitability for different use scenes.
Description of the drawings:
FIG. 1 is a schematic view of the cross-sectional configuration of the present invention;
FIG. 2 is a schematic view of the partial configuration of FIG. 1;
FIG. 3 is a perspective view of the gas and water backflushing mechanism;
FIG. 4 is a top view of the gas and water backflush mechanism;
FIG. 5 is a schematic view of a water flow of filtered water;
fig. 6 is a schematic view of water flow during backwashing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The water filtering device comprises a cylindrical tank 2 with a sewage inlet 1 at the upper part, an air-water backflushing chamber 3 which is arranged in the cylindrical tank 2 and is sealed at the bottom, and a filter layer 4 which is arranged in the cylindrical tank 2 and is positioned above the air-water backflushing chamber, wherein the space in the air-water backflushing chamber 3 is relatively sealed but not absolutely sealed, a gas-water backflushing mechanism 5 is arranged in the air-water backflushing chamber 3, the gas-water backflushing mechanism 5 comprises a lower central tube 8 with a gas washing opening 6 and a water washing opening 7 on the tube wall, a backflushing air inlet tube 9 and a backflushing water inlet tube 10 which are respectively communicated with the lower central tube 8 are arranged at the periphery, the backflushing air inlet tube 9 is provided with a plurality of air ports 11 along the length direction, the backflushing water inlet tube 10 is provided with a plurality of water outlets 12 along the length direction, the lower side part of the upper central tube is provided with a sewage discharge pipeline 15 extending out of the air-water backflushing chamber, the cylindrical tank 2 and the peripheral wall surface of the air-water backflushing chamber 3 can be integrally manufactured into a cylindrical shell, the middle lower part of the cylindrical shell is provided with a transverse partition plate 16, so that the cylindrical shell, the bottom surface of the cylindrical shell and the transverse partition plate form the closed air-water backflushing chamber 3, the upper central tube and the lower central tube can be coaxial tubes, and the connecting parts of the upper central tube and the lower central tube with the transverse partition plate can be.
When the filtering operation is carried out, sewage enters the cylindrical tank from the sewage inlet, water to be filtered and sewage enter the air-water backflushing chamber, the backflushing water inlet pipe and the lower central pipe after being sequentially filtered layer by layer through the filtering layer, and finally the filtered water is discharged from the washing pipe on the lower central pipe.
Preferably, the cylindrical tank is a cylindrical stainless steel tank body, the cylindrical stainless steel tank body is convenient to manufacture and good in structural stability, a circle of cofferdam plate 30 is arranged on the inner wall surface of the cylindrical tank and beside the sewage inlet, an annular groove 17 is formed between the cofferdam plate and the inner wall surface of the cylindrical tank, sawteeth 18 are arranged on the upper edge of the cofferdam plate, sewage flows into the annular groove 17 after entering the tank body from the sewage inlet 1, the sewage flows into the filter layer 4 from the overflow after overflowing in the annular groove 17, and the sewage enters the gas-water backflushing chamber 3 after being filtered by the filter layer 4.
In order to improve the connection strength of the tank body and the upper central pipe, a plurality of support rods 31 are arranged between the inner wall surface of the cylindrical tank and the upper central pipe, 2-4 layers are arranged in the cylindrical tank, and 2-4 support rods 31 are uniformly distributed on each layer.
For the convenience of manufacture, the filter layer 4 is positioned between the inner wall surface of the cylindrical tank and the upper central tube, the filter layer 4 sequentially comprises a fine quartz sand filter material layer 19 and a coarse quartz sand filter material layer 20 from top to bottom, and the thickness of the fine quartz sand filter material layer 19 can be 1-8 times that of the coarse quartz sand filter material layer 20.
In order to make the filtering effect good, the plate surface (namely the diaphragm plate 16) of the gas-water back flushing chamber, which is contacted with the filtering layer, is provided with filtering holes or is provided with a filter, and the filter can be a long-handle filtering cap 27.
In order to make the sewage discharging effect good, the upper end opening (i.e. the sewage overflow inlet 14) of the upper central pipe is higher than the upper surface of the filter layer, the upper end part of the upper central pipe is provided with a forward cone shell 21 and a reverse cone shell 22 which are connected with each other, and the design of the forward cone shell 21 and the reverse cone shell 22 is adopted (the upper end opening of the upper central pipe is smaller), which is beneficial to avoiding the reverse flow of the sewage entering the upper central pipe.
Furthermore, in order to design reasonably, the backwash air inlet pipe 9 comprises an air inlet ring pipe 23 and a plurality of backwash air inlet branch pipes 24 for communicating the lower central pipe 8 with the air inlet ring pipe 23, the backwash water inlet pipe 10 comprises an air inlet ring pipe 25 and a plurality of backwash water inlet branch pipes 26 for communicating the air inlet ring pipe with the lower central pipe, the air inlet ring pipe 23 and the water inlet ring pipe 25 are annularly arranged on the periphery of the lower central pipe, the diameters of the air inlet ring pipe 23 and the water inlet ring pipe 25 can be different and can be positioned at different heights, the backwash air inlet branch pipes 24 and the backwash water inlet branch pipes 26 are radially distributed and are uniformly distributed in the circumferential direction, the air ports 11 are distributed on the air inlet ring pipe 23 and the backwash air inlet branch pipes 24, the water outlet 12 is distributed on the water inlet ring pipe 25 and the backwash water inlet branch pipes 26, and when water is filtered or backwashed, the water passing is more uniform, when the water is filtered and discharged, the water passes through the filter layer 4, the long-handle filter cap 27, the air-water backflushing chamber 3, the water outlet 12, the lower central tube 8 and the water washing tube in sequence, and when the water is backflushed, the water passes through the water washing tube, the lower central tube 8, the water outlet 12, the air-water backflushing chamber 3, the long-handle filter cap 27 and the filter layer 4 in sequence.
A washing pipe 28 extending out of the air-water backflushing chamber is arranged at the side part of the lower central pipe, and the end part of the washing pipe is communicated with the washing port 7; the side part of the lower central tube is provided with a gas washing tube 29 extending out of a gas-water back flushing chamber, the gas washing tube is communicated with a gas washing port 6, the gas washing port is positioned above a water washing port of the water inlet tube, and the water washing tube 28 and the gas washing tube 29 are both connected with an opening and closing valve to control the on-off of water or gas.
The air-washing branch pipe 32 is branched from the air-washing pipe 29, the end of the air-washing branch pipe 32 is connected to the upper part of the annular groove 17, so that the dirt can easily flow into the filtering layer by the aid of air impact and can be easily impacted on the filtering layer, and the air-washing branch pipe 32 is provided with an opening and closing valve.
The invention relates to a working method of water filtering equipment, which comprises a cylindrical tank, an air-water backflushing chamber and a filtering layer, wherein the upper part of the cylindrical tank is provided with a sewage inlet, the air-water backflushing chamber is arranged at the closed bottom in the cylindrical tank, the filtering layer is arranged in the cylindrical tank and is positioned above the air-water backflushing chamber, the gas-water back flushing chamber is internally provided with a gas-water back flushing mechanism which comprises a lower central pipe with a gas flushing port and a water flushing port on the pipe wall, a back flushing air inlet pipe and a back flushing water inlet pipe which are respectively communicated with the lower central pipe are arranged on the periphery of the lower central pipe, the back flushing air inlet pipe is provided with a plurality of gas ports along the length direction, the backwashing water inlet pipe is provided with a plurality of water outlets along the length direction, an upper central pipe with a closed bottom surface is arranged in the cylindrical tank and above the air-water backwashing chamber, the upper end of the upper central pipe is provided with a sewage overflow inlet, and the lower side part of the upper central pipe is provided with a sewage discharge pipeline extending out of the air-water backwashing chamber; the sewage overflowed into the upper central pipe is discharged through a sewage discharge pipeline at the lower side part of the upper central pipe.
When the filtering structure works for a period of time and the dirt in the filtering layer reaches a certain amount, the filtering resistance of the filtering layer is increased to reduce the filtering amount, and at the moment, the filtering layer needs to be subjected to back flushing work to back flush and discharge the dirt in the filtering layer and recover the filtering capacity of the filtering layer; when the backwashing works, firstly, high-pressure air is only used for dispersing dirt, then high-pressure water washing and high-pressure air washing are carried out together, and finally, high-pressure water washing is only used; when only high-pressure gas is used for dispersing the dirt, gas is blown to the inside through the gas washing pipe by using inflation equipment, the gas passes through the backwashing gas inlet pipe, the gas port, the gas-water backwashing chamber and the long-handle filter cap from the inside of the lower central pipe in sequence, and the gas penetrates through the filter layer and disperses the impurities filtered and deposited on the filter layer; when the high-pressure water is washed, the high-pressure washing water is introduced into the washing pipe, water flow enters the filter layer from the interior of the lower central pipe through the backwashing water inlet pipe, the water outlet, the air-water backwashing chamber and the long-handle filter cap in sequence, the water flow passes through the filter layer to wash impurities filtered and deposited on the filter layer, and the high-pressure water washing can wash the impurities left after water filtration to a sewage overflow inlet at the upper end of the upper central pipe and finally discharge the impurities through a sewage discharge pipeline; when the high-pressure water flushing and the high-pressure air flushing are carried out together, namely, the two modes are carried out simultaneously, namely, the high-pressure flushing water is introduced into the water washing pipe, and the high-pressure air is introduced into the air washing pipe, and when only the water flushing is carried out at last, the water flow rate can be twice of that before.
The filtering period of the water filtering equipment of the invention is prolonged by about 75 percent compared with the prior filter tank which is only flushed by water, the sewage interception amount can be improved by 118 percent, the consumption of backwashing water can be reduced by more than 40 percent compared with the filter tank which is only flushed by water, and the air is pressed into the filter layer 4 by an air blower (an air receiving and washing pipe 29) when the filter tank is flushed by air, so the filtering performance of the filter tank is improved from the following aspects: the addition of compressed air increases the shearing force of the surface of the filter material in the filter layer, so that the dirt which is not easy to peel off when being washed by water can be peeled off under the high shearing force of the air bubbles rising sharply, and the backwashing effect is improved. Secondly, after the air bubbles move in the filtering layer and are mixed, the particles of the filtering material can be continuously dispersed in a vortex manner, the particles of the filtering layer are promoted to be circularly mixed, and therefore the uniformly graded mixed filtering layer is obtained, the porosity of the mixed filtering layer is higher than that of the graded filtering layer, the filtering performance is improved, and the dirt intercepting capability of the filtering layer is improved. And thirdly, due to the addition of compressed air, bubbles are exploded in the granular filter material, so that the collision friction among the filter material particles is intensified, the shearing action on the surfaces of the filter material particles is fully exerted during water washing, and the water washing and dirt cleaning efficiency is enhanced. The movement of air bubbles in the filter layer reduces the mutual contact resistance between filter material particles during water washing, greatly reduces the water washing strength and saves the washing energy consumption. In conclusion, when the air and water are back flushed, the dirt peeling capacity and the dirt intercepting capacity are greatly enhanced due to the violent turbulent motion of the bubbles; during the actual backwash of the present apparatus, we observe: the backwashing effect of the device is positive because the filter layer soil is peeled off by more than 95% when the backwashing time is about 5 minutes.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A water filtration apparatus, characterized by: including upper portion have the sewage water inlet the cylindricality jar, establish the air water recoil room of bottom in the cylindricality jar and establish the filter layer that just is located air water recoil room top in the cylindricality jar, be equipped with gas, water recoil mechanism in the air water recoil room, gas, water recoil mechanism have the lower center tube of gas wash mouth and wash mouth on the pipe wall, the periphery be provided with respectively with backwash intake pipe and the backwash inlet tube of center tube intercommunication down, the backwash intake pipe is equipped with a plurality of gas ports along its length direction, the backwash inlet tube is provided with a plurality of outlets along its length direction, just be located air water recoil room top in the cylindricality jar and be equipped with bottom surface confined last center tube, go up and be equipped with sewage overflow inlet on the center tube, go up the center tube downside and be provided with the sewage pipes.
2. The water filtration apparatus of claim 1, wherein: the cylindrical tank is a cylindrical stainless steel tank body, a circle of cofferdam plate is arranged on the inner wall surface of the cylindrical tank and beside the sewage inlet, annular grooves are formed in the cofferdam plate and the inner wall surface of the cylindrical tank, and sawteeth are arranged at the upper edge of the cofferdam plate.
3. The water filtration apparatus of claim 1, wherein: and a plurality of support rods are arranged between the inner wall surface of the cylindrical tank and the upper central pipe.
4. The water filtration apparatus of claim 1, wherein: the filter layer is located between the inner wall surface of the cylindrical tank and the upper central tube and comprises a fine quartz sand filter material layer and a coarse quartz sand filter material layer.
5. The water filtration apparatus of claim 1, wherein: the plate surface of the gas-water back flushing chamber, which is contacted with the filter layer, is provided with a filter hole or a long-handle filter cap.
6. The water filtration apparatus of claim 1, wherein: the upper port of the upper central tube is higher than the upper surface of the filter layer.
7. The water filtration apparatus of claim 1, wherein: the back flush air inlet pipe comprises an air inlet annular pipe and a plurality of back flush air inlet branch pipes used for communicating the lower central pipe with the air inlet annular pipe, and the back flush water inlet pipe comprises a water inlet annular pipe and a plurality of back flush water inlet branch pipes used for communicating the water inlet annular pipe with the lower central pipe.
8. The water filtration apparatus of claim 1, wherein: a washing pipe extending out of the air-water backflushing chamber is arranged on the side part of the lower central pipe, and the end part of the washing pipe is communicated with a washing opening; the side part of the lower central tube is provided with an air washing tube extending out of the air-water backflushing chamber, the air washing tube is communicated with an air washing port, and the air washing port is positioned above a water washing port of the water inlet tube.
9. A working method of water filtering equipment is characterized in that: the water filtering equipment comprises a cylindrical tank, an air-water backflushing chamber and a filtering layer, wherein the upper part of the cylindrical tank is provided with a sewage inlet, the air-water backflushing chamber is arranged at the bottom in the cylindrical tank, the filtering layer is arranged in the cylindrical tank and is positioned above the air-water backflushing chamber, a gas-water backflushing mechanism is arranged in the air-water backflushing chamber, the gas-water backflushing mechanism comprises a lower central pipe, a backflushing air inlet pipe and a backflushing water inlet pipe, the pipe wall of the lower central pipe is provided with a gas washing port and a water washing port, the periphery of the lower central pipe is provided with a backflushing air inlet pipe and a backflushing water inlet pipe which are respectively communicated with the lower central pipe, the backflushing air inlet pipe is provided; when the filtering operation is carried out, sewage enters the cylindrical tank from the sewage inlet, water to be filtered sequentially passes through the filtering layer and is filtered layer by layer and then enters the air-water backflushing chamber, the backflushing water inlet pipe and the lower central pipe, and finally the filtered water is discharged from the washing pipe on the lower central pipe.
10. The method of operating a water filtration plant as claimed in claim 9, wherein: when the filtering structure works for a period of time and the dirt in the filtering layer reaches a certain amount, the filtering resistance of the filtering layer is increased to reduce the filtering amount, and at the moment, the filtering layer needs to be subjected to back flushing work to back flush and discharge the dirt in the filtering layer and recover the filtering capacity of the filtering layer; when the backwashing works, firstly, high-pressure air is only used for dispersing dirt, then high-pressure water washing and high-pressure air washing are carried out together, and finally, high-pressure water washing is only used; when only high-pressure gas is used for dispersing the dirt, gas is blown to the inside through the gas washing pipe by using inflation equipment, the gas passes through the backwashing gas inlet pipe, the gas port, the gas-water backwashing chamber and the long-handle filter cap from the inside of the lower central pipe in sequence, and the gas penetrates through the filter layer and disperses the impurities filtered and deposited on the filter layer; when the high-pressure water is washed, the high-pressure washing water is introduced into the washing pipe, water flow enters the filter layer from the interior of the lower central pipe through the backwashing water inlet pipe, the water outlet, the air-water backwashing chamber and the long-handle filter cap in sequence, the water flow passes through the filter layer to wash impurities filtered and deposited on the filter layer, and the high-pressure water washing can wash the impurities left after water filtration to a sewage overflow inlet at the upper end of the upper central pipe and finally discharge the impurities through a sewage discharge pipeline; when the high-pressure water flushing and the high-pressure air flushing are carried out together, namely, the two modes are carried out simultaneously, namely, the high-pressure water for flushing is introduced into the water washing pipe and the high-pressure air is introduced into the air washing pipe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469877.7A CN112386969A (en) | 2020-12-15 | 2020-12-15 | Water filtering equipment and working method thereof |
| PCT/CN2021/093337 WO2022127011A1 (en) | 2020-12-15 | 2021-05-12 | Water filtering equipment and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469877.7A CN112386969A (en) | 2020-12-15 | 2020-12-15 | Water filtering equipment and working method thereof |
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| CN112386969A true CN112386969A (en) | 2021-02-23 |
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| CN202011469877.7A Pending CN112386969A (en) | 2020-12-15 | 2020-12-15 | Water filtering equipment and working method thereof |
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| WO (1) | WO2022127011A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461216A (en) * | 2021-07-23 | 2021-10-01 | 河北北洋水处理设备有限公司 | Integrated high-efficiency conglomerate water purifying equipment |
| CN113774996A (en) * | 2021-09-22 | 2021-12-10 | 广州全一泵业有限公司 | Intelligent water supply equipment |
| WO2022127011A1 (en) * | 2020-12-15 | 2022-06-23 | 福州海恒水务设备有限公司 | Water filtering equipment and working method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050000877A1 (en) * | 1999-09-21 | 2005-01-06 | Sharkey James P. | Method and apparatus for removing particulate contaminants from commercial laundry waste water |
| CN1657134A (en) * | 2004-02-20 | 2005-08-24 | 深圳市清泉水系统工程设备有限公司 | Reverse filtering air water back flushing filtering pond and reverse filtering air water back flushing method |
| CN102407037A (en) * | 2011-09-21 | 2012-04-11 | 成都碧水齐力市政工程有限公司 | Air-water backwash filter and air-water backwash method |
| CN103071323B (en) * | 2013-01-15 | 2015-01-07 | 东莞市科达环保工程有限公司 | Novel air-water backwashing method of filtering pond |
| CN203342474U (en) * | 2013-05-20 | 2013-12-18 | 江苏恒博环境工程设备有限公司 | Back-washing device |
| CN204170467U (en) * | 2014-09-30 | 2015-02-25 | 天津市华水自来水建设有限公司 | A kind of conventional rapid filter adopting combined water and air backwash |
| CN112386969A (en) * | 2020-12-15 | 2021-02-23 | 福州海恒水务设备有限公司 | Water filtering equipment and working method thereof |
-
2020
- 2020-12-15 CN CN202011469877.7A patent/CN112386969A/en active Pending
-
2021
- 2021-05-12 WO PCT/CN2021/093337 patent/WO2022127011A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127011A1 (en) * | 2020-12-15 | 2022-06-23 | 福州海恒水务设备有限公司 | Water filtering equipment and working method thereof |
| CN113461216A (en) * | 2021-07-23 | 2021-10-01 | 河北北洋水处理设备有限公司 | Integrated high-efficiency conglomerate water purifying equipment |
| CN113774996A (en) * | 2021-09-22 | 2021-12-10 | 广州全一泵业有限公司 | Intelligent water supply equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022127011A1 (en) | 2022-06-23 |
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